Wirelessly posted (iPhone 4: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8F190 Safari/6533.18.5)
You can't install the app store or any other iPhone software onto it as it isn't an iPhone. No idea where you'd get instructions, but why not try where you bought it from?